ID#: 37
Abstract Title: Two-step Chemical-Kinetic Descriptions for Detonation Studies
Session Title: Detonation Chemistry
Session Date: 7/31/01
Session Start Time: 2:00 PM
Contributing Author: Varatharajan, B.
Organization: University of California, San Diego
Country: USA
Authors: B. Varatharajan, F. A. Williams
Short Abstract: Simplified two-step chemical-kinetic descriptions have been developed for detonation of practical fuels like acetylene, ethylene, and JP-10. For all of these fuels, the two-step mechanism consists of a fuel-consumption step that produces radicals and a CO-oxidation/radical-recombination step that proceeds at the rate the of the elementary H, OH recombination reaction. The calculated ignition times and the temperature histories using this two-step mechanism are in excellent agreement with those from a detailed mechanism consisting of 174-steps among 36 chemical species. These mechanisms are useful for studying detonation structure and stability, and predicting pulse detonation engine performance in multi-dimensional CFD calculations.